carpinella



4 Sheets-Sheet 1 Filed May 10, 1952 INVENTOR a mm mm Po 1 A M J.Y 18 m1955 M. J. CARPINELLA 2,735,567

FASTENER ATTACHING MACHINE Filed May 10, 1952 l 4 Sheets-Sheet 2INVENTOR Michael J. Cqr inella ATTORNEY 1956 M. J. CARPINELLA FASTENERATTACHING MACHINE 4 Sheets-Sheet Filed May 10, 1952 INVENTOR Michael J.Cur inella ATTORNEY United States Patent O F FASTENER ATTACHING MACHINEMichael J. Cnrpinella, Waterbury, onn., assignor to ScovillManufacturing Company, Waterbury, Conn, a corporation of ConnecticutApplication May 10, 1952, Serial No. 2557,08].

4 Claims. (Cl. 218-6) This invention relates to fastener attachingmachines for setting snap fastener elements or buttons upon garments.

One object of this invention is to provide a fastener attaching machinewhich is divided into two major units of a character wherein one sectionof the machine can be built as a separate unit in one plant and theother section built as a separate unit in some other plant, or the unitscan be built in different parts of the same plant. The units when builtas separate assemblies may then be brought together attached to a commonbase and by making a few simple connections between the two unitsproduce quickly and in an economical manner a complete fastenerattaching machine.

Heretofore, machines of this character employed essentially a settingplunger, two feed slides, rotating hoppers to orient the fastenerelements into feed tracks leading to the setting station, all of whichmovable elements were operated by separate linkage, or other mechanicalconnections from a common drive shaft. More particularly the object ofmy invention is accomplished by incorporating into the plunger head unitof the machine the setting plunger and two feed slides all operated fromlevers contained as a part of the plunger head unit. More particularlythe plunger and feed slides are operated by a single lever so as topermit of a single link with the drive unit. The drive unit consists ofthe main drive shaft with a clutch control driven from a source ofpower, and wherein there is only a single movable connection between thedrive unit and the plunger head unit.

One of the advantages of dividing a fastener machine of the abovecharacter into two separate units is to expedite the manufacture of themachine, and also to facilitate the changeover of the machine from onetype of fastener to another.

Another object of the invention is to operate the two fastener elementfeed slides from a common lever mounted on the same unit as the feedslides and wherein there are independent adjustable means for each ofthe feed slides.

Further objects of the present invention will in part be obvious andothers will be pointed out hereinafter in the specification inconnection with the accompanying drawing which illustrates the preferredform of the present invention.

Fig. 1 is a right elevational View in part and a sectional view in partof the complete machine, the view taken along the line 11 of Fig. 3.

Fig. 2 is a left elevational view of chine similar to Fig. i, Fig. 3.

Fig. 3 is a plan view of the same.

Fig. 4 is a front elevation of the same.

Fig. 5 is a side view of the adjustable connection for the upper slide,and

Fig. 6 is a side view of the adjustable connection for the lower slide.

The setting unit mechanism and the drive unit mechanism can be made ascomplete assemblies by themselves,

the complete mathe view taken along line 2-2 of 2,735,567 Patented Feb.21, 1956 after which the drive unit and the setting unit can be attachedto a common support or standard, properly aligned and tied together withstabilizing brackets and having only a single drive link operatingbetween the two units.

Considering now the details of the drawings, the drive unit isdesignated generally by the letter A and the fastener setting unit bythe letter B, both of which units may be secured to a common support 10.

Drive unit The drive unit A comprises a bearing block 11 having spacedbearings 11a in which a main drive shaft 12 is journaled.v An eccentric13 is keyed to shaft 12 and drives a pitman link 14 having the usualstrap bearings 15 about said eccentric 13. One end of the main shaft 12supports a conventional one-way clutch 16 of well known constructionused on fastener setting machines and driven by a fly wheel 17 which inturn may be belt-driven from any suitable source of power.

Fastener setting unit The fastener setting unit B consists of a supportframe or housing 26 having a base 21 resting upon and suitably bolted tothe support 10. The frame is formed with an integral head part 22 withinwhich is slidably fitted a setting plunger 23. The frame 20 ispreferably of gooseneck shape so formed as to provide a relatively deepclearance in back of the setting station of the machine, generally knownas a deep-throat machine, which is for the purpose of accommodatinggarments having fasteners set thereupon at a considerable distance fromthe edge of the garment. The upper end of the setting plunger 23 has asuitable connection with one end of a relatively short bell-crank lever24 pivoted on a stub shaft 25 mounted in bearing lugs 26 extendingupwardly from the housing 20. The opposite end of the bell-crank lever24 is connected to the pitman link 14 as by means of a bolt 27.

Upper slide mechanism in feeding one part of a fastener element to thesetting plunger 23 a. gravity feed track 28 (see Fig. 4) is providedthat directs the elements from a hopper of conventional construction,not shown, to a pusher slide bracket 25 attached to the head 22 of thehousing 20 as by screws 3t). A pusher slide 31 operates in a feed track29a provided in the slide bracket 29 to feed the elements one by one tothe jaws of a receiving unit 32 mounted on the end of the settingplunger 23. The slide 31 is connected through an adjusting unit 33 to alink 34 which in turn is connected to the intermediate part of a slideoperating lever 35 at pivot 36. The lever 35 is pivoted to the housing2% as at 37 and extends a short distance thereabove where it isconnected to one end of a lostmotion linkage 33. The opposite end of thelinkage 38 is connected to the bell-crank lever 24 as by a pivot bolt39.

Specifically the lost motion linkage 38 consists of cylindrical rod 384:having an integral head 3% at one end by means of which the linkage 38is pivotally connected to the bell-crank lever 24 by bolt 39. Acompression spring 380 surrounds the rod 38a and is compressed betweenthe head 38b and a bearing block 33d through which rod 38:: is slidable.The block 38d is connected to the upper end of the slide operating lever35 through pivot pin 73. The block 384! can be adjusted along the rod38a by nuts 38s on a threaded portion of said rod to vary the tensionforce of the spring 38c. From this con-- struction it will be evidentthat if the lever 35 or the slides 31 and 56 should become stuck, therod 38a would slide through the block 38d and only further compress thespring 38c rather than to impart a direct drive force to.- the stuckparts.

In describing more of the details of the adjusting units 33 for theupper slide 31 reference is made to Figs. 2 and 5. The unit 33 consistsof a yoke 40 having drop connection with a lateral pin 41 projectingfrom one side of the slide 31. The yoke 49 has a recessed channel 42 inone side wall within which is slidably fitted an adjusting bar 43connected to one end of the link 34 as at 43a. The bar 43 is movedlongitudinally relative to the yoke 40 by an adjusting screw 44rotatively mounted in a bifurcated lug 45 on yoke an and having threadedengagement with one end of the adjusting bar Rotation of the screw 44will move the bar relative to the yoke 40 and obviously adjust theposition of the slide 31 relative to the link 34. After the properadjustment is made the bar 43 may be locked to the yoke 46 by means ofthe clamp screw 46.

Lower slide mechanism In order to feed another element complemental tothe element fed through the upper feed track into the setting station ofthe machine, another hopper of conventional construction, not shown,will direct the second element into the gravity feed track 48 forguiding said element to a lower pusher slide bracket 49 mounted on thebase 21 of the setting unit housing 20. A pusher slide 50 operates in abracket 49 for feeding said element in proper timed relationship to areceiving jaw unit 51 slidably mounted on a forming die 52 against theinfluence of a spring 53. The die 52 is detachably secured in the usualmanner to the base 21.

Motion is imparted to the slide 50 from the lever 35, and specificallythe lower end of the lever 35 is formed with a gooseneck bend 35a whichis connected to a lug 50a on slide 50 through an adjusting unit 54. Thedetails of this unit are best shown in Fig. 6 and consist of a yoke 55pivoted to the end of the lever bend 35a. The yoke 55 is provided with alongitudinal channel 56 for adjustably receiving a sliding bar 57, oneend of which has an offset lug 57a in turn pivotally connected to theslide lug 50:: as at 58. The slide bar 57 is adjusted relative to theyoke by means of an adjusting screw 59 rotatably mounted in a lug 6%formed as a part of the yoke 55 and having threaded engagement in oneend of the sliding bar 57. When the proper adjustment is made of the bar57 to the yoke 55 said bar and yoke may be held in adjusted position asby a clamp bolt 61.

In machines of this character it is necessary to rotate the hoppers. Inorder to rotate such hoppers from the main drive shaft I provide asprocket and chain drive connection. A driver sprocket 62 is keyed tothe main drive shaft 12 and operates a link chain 63 riding over suchsprocket 62 and to an idler sprocket 64 adjustably mounted on thebearing block 11 and thence to a driven sprocket 65 keyed to a shaft 66.The shaft 66 is journaled in bearing bosses 67 formed as a part of thelug extension 20a on the housing 20. A sheave 68 is secured to each endof the shaft 66 and from which sheaves the hoppers may be belt driven.

In case it is desired to manually operate the pusher slides 31 and 50 toretract them in their respective slide brackets independently of thepower means a pull back handle lever 70 is provided that is pivotallymounted so as to freely operate about the head end 37a of pivot bolt 37.The handle lever 70 is over-balanced so as to normally overlie the driveunit A (see Figs. 1 and 2) and is provided with a depending nose 71abutted against the shaft 66 as a stop. The lever 70 is so arranged asto line up with a roller 72 rotatably mounted on a pivot pin '73 forminga part of the lost-motion linkage 33. In order to retract the pusherslides in their respective guideways without operating the machine bypower it is only necessary to manually operate the lever 70 in acounterclockwise direction as viewed in Fig. 1 by grasping its upper endand pulling it toward the front part of the machine whereupon only thelever 35 and associated pusher slides 31 and 51 will be operated. Itshould be here understood that the lever does not move at any time thatthe setting machine is power operated.

It should be understood that many of the units or parts associated withthe setting unit, such as the plunger head with its associated parts areof well known construction and need not be further described in detail.The principal feature of this machine being in rearranging the numerousparts and linkage for operating the main plunger and feed slides in aunitary structure and then to devise the drive unit as another unitarystructure so that there is in fact only one main moving connectionbetween the units, namely, the pitrnan link 16. After the units areattached to the common support 19 a pair of stabilizing brackets 74 areconnected between and bolted to the bearing block 11 of the drive unitand the support frame 26 of the setting unit so as to combine the twounits in a more rigid structure for the complete setting machine.

In the operation of this machine which may be under the control of afoot treadle, the one revolution clutch 16 will first be trippedwhereupon the constantly rotating beltdriven fiy wheel 17 will cause themain drive shaft 12 to rotate one revolution and carry with it theeccentric 13. The single cycle of the eccentric will operate thebell-crank lever 26 through the pitman link 14 and cause the plunger 23to descend in the head 22. The descending plunger 23 in cooperation withthe forming die will pick up complemental fastener elements previouslyfed into their respective jaw receiving units 32 and 51 and unite themin the usual manner upon a piece of supporting material.

It is to be observed that during the fastener setting operation of theunit B the pusher slides 31 and 50 will be retracted in their respectivefeed tracks by the operation of the common lever 35 operated from thebell-crank lever 24 through the lost-motion linkage 38 and pick upanother set of elements from the ends of the chutes 28 and 48 and duringthe up or return stroke of the setting punch said pusher slides willadvance said latter set of elements into the jaw units 32 and 51 readyfor the next setting operation.

I claim:

1. In a fastener setting machine, a setting unit comprising a head and astationary anvil, a reciprocating setting punch operating in saidhead, ashort bell-crank mounted on said head and connected to said punch,fastener holding jaw members associated with said anvil and with saidpunch, separate pusher slides for feeding fasteners into said jawmembers, and a common lever pivoted on said head, operated by saidbell-crank and having link connection with each of said slide means, andmeans for oscillating said short bell-crank.

2. A fastener setting machine as defined by claim 1 wherein alost-motion connection is provided between one end of the common leverand the bell-crank.

3. In a fastener attaching machine, a frame having a head, a plungerreciprocating in said head, a short bellcrank lever mounted on saidframe for operating said plunger, a pair of feed slides slidably mountedin said frame and adapted to deliver fastener elements to the settingstation of the machine, a common lever having linkage connection withsaid slides, a lost motion connection between said common lever and saidbell-crank lever, and power-driven means for operating said bell-cranklever.

4. In a fastener attaching machine as defined by claim 3 wherein thelinkage connections between said slides and said common lever areadjustable.

References Cited in the file of this patent UNITED STATES PATENTS561,015 Mathison May 26, 1896 1,197,828 Keck Sept. 12, 1916 1,944,510Hayden Ian. 23, 1934 2,337,268 Peterson Dec. 21, 1943 2,406,516Treciokas Aug. 27, 1946 on... gu

